DocumentCode
3196724
Title
Modeling uncertainty in databases
Author
Sadri, Fereidoon
Author_Institution
Dept. of Comput. Sci., Concordia Univ., Montreal, Que., Canada
fYear
1991
fDate
8-12 Apr 1991
Firstpage
122
Lastpage
131
Abstract
Relational algebra operations were extended to produce, together with answers to queries, information regarding sources that contributed to the answers. The author´s previous model is reviewed and the semantic interpretation is presented. It is shown that extended relational algebra operations are precise, that is, they produce exactly the same answers that are expected under the semantic interpretation. Algorithms for computing the reliability of answers to a query are also reviewed and their correctness under the semantic interpretation proposed is proved
Keywords
artificial intelligence; relational databases; artificial intelligence; databases; queries; relational algebra; reliability; semantic interpretation; uncertainty modelling; Algebra; Artificial intelligence; Computer science; Database systems; Decision making; Probability; Prototypes; Relational databases; Solids; Uncertainty;
fLanguage
English
Publisher
ieee
Conference_Titel
Data Engineering, 1991. Proceedings. Seventh International Conference on
Conference_Location
Kobe
Print_ISBN
0-8186-2138-9
Type
conf
DOI
10.1109/ICDE.1991.131459
Filename
131459
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